Actually, your example doesn’t support your claim about what “Islamic culture” would do here. No-one in the UK has ever been murdered for burning a book (at least, there is no credible record of that). If that had happened, it would be a huge, documented case.
By contrast, incidents of Qur’an burning, or desecration of Islamic texts, do happen in the UK, often tied to acts of Islamophobia. For example, a man was fined (later his conviction overturned) for burning a Qur’an outside the Turkish consulate in London. The Guardian. He was not murdered, you will be the first to agree I think.
Religious hate crime statistics in England & Wales show that Muslims are disproportionately targeted. In the year ending March 2024, there were 10,484 religious hate crimes, with 38 % of them targeting Muslims.
The Guardian+3GOV.UK+3UK Parliament+3
In the same period, only 7 % of religious hate crimes were recorded as targeting Christians. GOV.UK
Attacks on mosques and Islamic institutions are pretty widespread. A survey found that around 42 % of mosques or Islamic bodies had experienced a religiously motivated attack in the past three years. Al Jazeera
Yes, there is more Qur’an burning (or more frequent attacks on Muslims) here than attacks on Christians.
The UK’s legal framework does not allow murder or violence to enforce claims of blasphemy or insult, whatever the target; such acts would be prosecuted under general criminal law.
Using foreign examples (e.g. places where law or culture is very different) to assert what “Islamic culture” would do in the UK is misleading.
You say the person thinks your argument is “weak” ; that itself betrays a misunderstanding of the difference between fundamentalism (a radical belief system, often minority) and mainstream religion (the broader, mostly non-extremist practice by most adherents). Conflating the two is imprecise and unfair. Fundamentalists exist in many faiths; they do not define the whole religion or its majority.